Improvement in the manufacture of soap



NITED STATES PATENT OFFICE.

ASAHEL K. EATON, OF NEW YORK, N. Y.

IMPROVEMEN'FIN THE MANUFACTURE OF SOAP.

Specification forming part of LettersPatent No. 36,286, dated August 26, 1862.

To all whom it may concern:

Be it known that I, ASAHEL K. EATON, of the city, county, and State of New York, have invented and discovered a new and useful application-in soap-making of the refuse liquors resultin gfrom the treatmentof vegetable fibers with alkalies; and I do hereby declare that the following is a full and exactdescription thereof.

It is well known that when vegetable fibers are treated with alkalies at a high temperature, as in the process of manufacturing paper-pulp from straw, and in other analogous processes, there results a dark solution containing alkali, dissolved silica, resinous substances, &c. This refuse has hitherto been considered nearlyvalueless, and has been either thrown away or used for manure.

My invention consists in using this refuse as a constituent in soap-making, containing at once, as it does, alkali, silica, and resin, and, with oils or fats, forming a soap which has the properties of a silicated soap and of a soap prepared with resin.

In practice I take a suitable oil or fat and sapouify the same by boiling it with the said refuse alkaline liquors, the treatment being essentially the same as the ordinary process of soap-making. The result is a soap composed of saponified fat or oil, saponified resin, and silica. By this use of what has hitherto been considered a refuse the soap is produced at a low cost.

I do not claim the process of saponifying an oil, a fat, or a resin by boiling with an alkali, nor the introduction into soap of silica; but

I claim as my invention and desire to secure by Letters Patent The use, as a constituent in soap-making, of the refuse liquors which result from the treatment of straw or other vegetable fibers with alkalies, the said refuse liquors containing alkali and more or less silica and resin.

A. K. EATON.

Witnesses:

W. W. HOWE, ALEXANDER WILDER. 

